Submission #838544

#	Time	Username	Problem	Language	Result	Execution time	Memory
838544		finn__	Permutation (APIO22_perm)	C++17	100 / 100	2 ms	340 KiB

perm

#include <bits/stdc++.h>
#include "perm.h"
using namespace std;

vector<int> construct_permutation(long long k)
{
    if (k == 1)
        return {};
    if (k == 2)
        return {0};

    for (int q : {2, 3, 5, 7, 11, 13, 17, 19, 23})
        if (!(k % q) && k > q)
        {
            auto p = construct_permutation(k / q);
            auto s = construct_permutation(q);
            for (int &x : s)
                x += p.size();
            p.insert(p.end(), s.begin(), s.end());
            return p;
        }

    auto p = construct_permutation(k >> 1);
    p.push_back(p.size());
    p.insert(p.begin(), p.size());
    return p;
}

• Subtask 1: 10 / 10
• Subtask 2: 90 / 90